Nitrogen oxides such as N2O and N2O5 are present at low concentrations in smog, in part because of their reactivity. Balance the chemical equations by adding the missing coefficients.

(a) The conversion of N2O to NO2 in the presence of oxygen
(b) The decomposition of N2O5 to NO2 and O2

How many grams of magnesium metal will react completely with 8.3 liters of 5.5 m hcl? show all of the work needed to solve this problem. mg (s) + 2hcl (aq) → mgcl2 (aq) + h2 (g)

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?